* how to disable dpst on linux?
@ 2012-11-20 18:24 Роман Мельник
2012-11-22 10:34 ` Antti Koskipää
0 siblings, 1 reply; 6+ messages in thread
From: Роман Мельник @ 2012-11-20 18:24 UTC (permalink / raw)
To: intel-gfx
Good day!
I've sent already mail, but got no response, so trying again.
Please advise how to disable dpst on linux? The module is i915. As I
see, windows driver has such checkbox for this. Can I do the same on linux?
Thanks a lot!
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: how to disable dpst on linux?
2012-11-20 18:24 how to disable dpst on linux? Роман Мельник
@ 2012-11-22 10:34 ` Antti Koskipää
2012-11-22 14:36 ` РоманМельник
0 siblings, 1 reply; 6+ messages in thread
From: Antti Koskipää @ 2012-11-22 10:34 UTC (permalink / raw)
To: intel-gfx
On 11/20/12 20:24, Роман Мельник wrote:
> Good day!
>
> I've sent already mail, but got no response, so trying again.
> Please advise how to disable dpst on linux? The module is i915. As I
> see, windows driver has such checkbox for this. Can I do the same on linux?
The linux driver does not support DPST at all.
--
- Antti
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: how to disable dpst on linux?
2012-11-22 10:34 ` Antti Koskipää
@ 2012-11-22 14:36 ` РоманМельник
2012-11-22 15:47 ` Antti Koskipää
0 siblings, 1 reply; 6+ messages in thread
From: РоманМельник @ 2012-11-22 14:36 UTC (permalink / raw)
To: intel-gfx
Antti Koskipää <antti.koskipaa <at> linux.intel.com> writes:
>
> On 11/20/12 20:24, Роман Мельник wrote:
> > Good day!
> >
> > I've sent already mail, but got no response, so trying again.
> > Please advise how to disable dpst on linux? The module is i915. As I
> > see, windows driver has such checkbox for this. Can I do the same on linux?
>
> The linux driver does not support DPST at all.
>
But I definitely see that when the laptop works from battery, it changes
dynamically the contrast of the screen depends on what the summary brightness of
the screen (the more dark pixels - the more screen has less contrast). If this
is not DPST, so that what can it be and how to disable this? Thanks!!
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: how to disable dpst on linux?
2012-11-22 14:36 ` РоманМельник
@ 2012-11-22 15:47 ` Antti Koskipää
2012-11-23 16:51 ` РоманМельник
0 siblings, 1 reply; 6+ messages in thread
From: Antti Koskipää @ 2012-11-22 15:47 UTC (permalink / raw)
To: intel-gfx
On 11/22/12 16:36, РоманМельник wrote:
> Antti Koskipää <antti.koskipaa <at> linux.intel.com> writes:
>
>>
>> On 11/20/12 20:24, Роман Мельник wrote:
>>> Good day!
>>>
>>> I've sent already mail, but got no response, so trying again.
>>> Please advise how to disable dpst on linux? The module is i915. As I
>>> see, windows driver has such checkbox for this. Can I do the same on linux?
>>
>> The linux driver does not support DPST at all.
>>
>
> But I definitely see that when the laptop works from battery, it changes
> dynamically the contrast of the screen depends on what the summary brightness of
> the screen (the more dark pixels - the more screen has less contrast). If this
> is not DPST, so that what can it be and how to disable this? Thanks!!
It could be CABC (Content Adaptive Backlight Control) which is a similar
technology but is implemented fully in hardware, in the panel. How you
can disable (and IF you can disable it) depends completely on the hardware.
--
- Antti
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: how to disable dpst on linux?
2012-11-22 15:47 ` Antti Koskipää
@ 2012-11-23 16:51 ` РоманМельник
2012-11-28 16:53 ` Jesse Barnes
0 siblings, 1 reply; 6+ messages in thread
From: РоманМельник @ 2012-11-23 16:51 UTC (permalink / raw)
To: intel-gfx
> It could be CABC (Content Adaptive Backlight Control) which is a similar
> technology but is implemented fully in hardware, in the panel. How you
> can disable (and IF you can disable it) depends completely on the hardware.
>
It seems to be something at software level, because when I'm in BIOS, and
switching to the battery, the screen doesn't dimm
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: how to disable dpst on linux?
2012-11-23 16:51 ` РоманМельник
@ 2012-11-28 16:53 ` Jesse Barnes
0 siblings, 0 replies; 6+ messages in thread
From: Jesse Barnes @ 2012-11-28 16:53 UTC (permalink / raw)
To: РоманМельник
Cc: intel-gfx
On Fri, 23 Nov 2012 16:51:09 +0000 (UTC)
РоманМельник <ruby.freeman@gmail.com> wrote:
> > It could be CABC (Content Adaptive Backlight Control) which is a similar
> > technology but is implemented fully in hardware, in the panel. How you
> > can disable (and IF you can disable it) depends completely on the hardware.
> >
>
> It seems to be something at software level, because when I'm in BIOS, and
> switching to the battery, the screen doesn't dimm
It's likely a desktop control thing then; in GNOME the power daemon has
some knobs to control this iirc. You might be able to disable it there.
--
Jesse Barnes, Intel Open Source Technology Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-11-28 16:52 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-11-20 18:24 how to disable dpst on linux? Роман Мельник
2012-11-22 10:34 ` Antti Koskipää
2012-11-22 14:36 ` РоманМельник
2012-11-22 15:47 ` Antti Koskipää
2012-11-23 16:51 ` РоманМельник
2012-11-28 16:53 ` Jesse Barnes
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.